AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School To the AP Chemistry Student: Welcome to my AP Chemistry class! I am looking forward to helping you gain a deeper appreciation for the science of chemistry and how it impacts our lives. I hope you are looking forward to an exciting and challenging year. Since you have elected to take this course, I assume you have the intelligence and motivation needed to be successful. Your hard work will pay off, and you will find AP Chemistry to be a very rewarding experience. The Advance Placement Chemistry experience is designed to provide a full year of college-level chemistry, so it places heavy demands on the student, especially in terms of the time commitment required. In fact, the College Board suggests that students devote a minimum of five hours per week for individual study outside of the classroom. The ultimate objective, of course, is to prepare you to take the AP Chemistry test in May 2015, and in order to accomplish this, topics are covered very quickly. For this reason, most students take AP Chemistry after they already completed a year of high school chemistry, since that provides them with a solid foundation. In order to ensure the best start for you next fall, I prepared a Summer Assignment that reviews many basic chemistry concepts. It is important that everyone come to the first day of class well prepared! Extensive remediation is not an option as we work towards our goal of becoming completely prepared for the AP Exam in early May, so seek help early if you are experiencing difficulties. Finally, I recommend that you spread out the Summer Assignment, rather than trying to complete it in the final week of the summer! It takes time for a student to process, practice and subsequently learn chemistry at the level necessary for success in AP Chemistry. Remember, AP Chemistry is an equivalent course to an Introductory Chemistry college course, a full year program. Taking a college level course in high school is difficult, and it requires commitment, hard work and time, but completion of a class like this is a great investment in your education. Prepare yourself and arrive ready to learn! You may want to use the following resources as help for the assignment that follows as well as throughout the year. You may also find some of your own. http://www.collegeboard.com/ap/students/chemistry/index.html www.chemmybear.com The following assignment will be reviewed in class beginning on the first day of school. I will take questions on any problems you may have had from this assignment on the first few days of class. Therefore you need to have your material with you on the first day. Please come prepared. If you have any questions please feel free to call me at 678-201-6813 (if I do not answer, please leave your name and a brief message and I will return your call) or email me at dsteiner@henry.k12.ga.us. 1. Review writing net ionic equations. You are expected to know the Solubility Rules on the attached page. Memorize them!! We will have a quiz on Friday the first week of school over these. 1 AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School 2. Memorize all polyatomic ion formulas and charges. They are listed on the handout attached to this page. Review these from Chem. I, as well. There are flash cards attached with some of them for you. Use them! You will have a test over these on the third day of class. You also need to know the monatomic ions on the attached page as well as be familiar with the important chemicals attached. 3. Complete the following assignment and bring to class with you on the first day of class. 2 AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School AP Chemistry Summer Assignment The following assignment is to be completed and brought on the first day of class. DIRECTIONS: Solve the problems below, showing your setup, calculations, units and correct Significant Figures (SigFigs). Neatly-written solutions are acceptable. (Points are deducted from AP tests if correct SigFig rules and labels are ignored, so get into the habit of using them all of the time!) 1. Demonstrate that you know the correct use of significant figures (SigFig digits) by completing the following: a. 738.90 m has _____ SigFgs. b. 0.0304 g has _____ SigFigs. c. 1.4 X 104 joules has _____SigFigs. d. 1 dozen donuts has _____ SigFigs. c. 40 mL has _____ SigFigs. f. 800. m has _____ SigFigs. 2. A cylinder rod formed from silicon is 21.3 cm long and has a mass of 5.00 kg. The density of silicon is 2.33 g/cm3. What is the diameter of the cylinder? (The volume of cylinder is given by V = πr2h, where r is the radius and h is the length.) 3. Calculate the following to the correct number of significant figures. a. 1.27 g / 5.296 cm3 = ________________________ b. 12.235 g / 1.01 L = __________________________ c. 12.2 g + 0.38 g = _________________________ d. 17.3 g + 2.785 g = _______________________ e. 2.1m x 3.215m = _____________________ f. 200.1mi x 120 min = __________________ g. (17.6 + 2.838 + 2.3 + 110.77)g = _________________ 4. A solid white substance A is heated strongly in the absence of air. It decomposes to form a new white substance, B, and a gas, C. The gas has exactly the same properties as the product obtained when carbon is burned in an excess of oxygen. Based on these observations, can we determine whether solids A and B and the gas C are elements or compounds? Explain your conclusions for each substance. 3 AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School Nomenclature Name these binary compounds of two nonmetals. 4. N2O4 1. IF7 2. N2O5 5. As4O10 3. XeF2 6. SF6 7. PCl3 8. S2Cl2 Name these binary compounds with a fixed charge metal. 9. AlCl3 12. KI 10. MgO 13. SrBr2 11. BaI2 14. Na2S 15. CaF2 16. Al2O3 Name these binary compounds of cations with variable charge. 17. CuCl2 20. PbCl4 18. Fe2O3 21. Cu2S 19. SnO 22. HgS 23. AuI3 24. CoP Name these compounds with polyatomic ions. 25. Fe(NO3)3 28. Ca(ClO3)2 26. NaOH 29. KNO2 27. Cu2SO4 30. NaHCO3 31. NH4NO2 32. Cu2Cr2O7 Name these binary acids 33. HCl 34. HI Name these acids with polyatomic ions. 35. HClO4 36. H2SO4 37. HC2H3O2 38. H3PO4 39. HNO2 40. H2CrO4 41. H2C2O4 42. H2CO3 Name these compounds appropriately. 43. CO 44. NH4CN 45. HIO3 46. NI3 47. AlP 48. OF2 49. LiMnO4 50. HClO 51. HF 52. SO2 53. CuCr2O7 54. K2O 55. FeF3 56. KC2H3O2 57. MnS Write the formulas. 58. Tin (IV) phosphide 59. Copper (II) cyanide 60. Magnesium hydroxide 61. Sodium peroxide 62. Sulfurous acid 63. Lithium silicate 64. Potassium nitride 65. Chromium (III) carbonate 66. Gallium arsenide 67. Cobalt (II) chromate 68. Zinc fluoride 69. Dichromic acid 4 AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School Solubility rules Review solubility rules and identify each of the following compounds as soluble or insoluble in water. 70. Na2CO3 76. AgI 82. Li2O 71. CoCO3 77. Ni(NO3)2 83. Mn(C2H3O2)2 72. Pb(NO3)2 78. KI 84. Cr(OH)3 73. K2S 79. FeS 85. AgClO3 74. BaSO4 80. PbCl2 86. Sn(SO3)4 75. (NH4)2S 81. CuSO4 87. FeF2 Predict whether each of these double replacement reactions will give a precipitate or not based on the solubility of the products. If yes, identify the precipitate. 91. cobalt (III) bromide and potassium sulfide 88. silver nitrate and potassium chloride 92. ammonium hydroxide and copper (II) 89. magnesium nitrate and sodium carbonate acetate 90. strontium bromide and potassium sulfate 93. lithium chlorate and chromium (III) fluoride Balancing Equations Balance the following equations with the lowest whole number coefficients. 94. S8 + O2 SO3 95. C10H16 + Cl2 C + HCl 96. Fe + O2 Fe2O3 97. C7H6O2 + O2 CO2 + H2O 98. KClO3 KCl + O2 99. H3AsO4 As2O5 + H2O 100. V2O5 + HCl VOCl3 + H2O 101. Hg(OH)2 + H3PO4 Hg3(PO4)2+H2 5 AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School Stoichiometry, Limiting Reactants, and Gas Laws 102. Given the equation below, what mass of water would be needed to react with 10.0g of sodium oxide? Na2O + H2O 2NaOH 103. What mass of sodium chloride is formed along with 45.0g of oxygen gas? 2NaClO3 2NaCl + 3O2 104. What mass of water will be produced when 100.0g of ammonia is reacted with excess oxygen? 4NH3 + 5O2 4NO + 6 H2O 105. If the reaction in #104 is done with 25.0g of each reactant, which would be the limiting ;reactant? 106. Na2S + 2AgNO3 Ag2S + 2NaNO3 a. If the above reaction is carried out with 50.0g of sodium sulfide and 35.0g of silver nitrate, which is the limiting reactant? b. What mass of the excess reactant remains? c. What mass of silver sulfide would precipitate? 107. What volume of hydrogen gas (measured at STP) would result from reacting 75.0g of sodium hydroxide with 50.0g of aluminum? 6NaOH + 2Al 2Na3AlO3 + 3H2 108. White gold is an alloy that typically contains 45.0% by mass gold and the remainder is platinum. If 154 g of gold are available, how many grams of platinum are required to combine with the gold to form this alloy? 109. What is the empirical formula of a compound that contains 53.73% Fe and 46.27% of S ? 6 AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School 110. In an experiment, a student gently heated a hydrated copper compound to remove the water of hydration. The following data was recorded: 1. Mass of crucible, cover, and contents before heating = 23.4 g. 2. Mass of empty crucible and cover = 18.82 g. 3. Mass of crucible, cover, and contents after heating to constant mass = 20.94 g. Calculate the percent by mass of water in the copper compound. 111. A hydrated compound has an analysis of 18.29% Ca, 32.37% Cl, and 49.34% water. What is its formula? 112. In Nature, strontium consists of four isotopes with masses and percent abundance of 83.9134 amu (0.50%), 85.9094 amu (9.9%) , 86.9089 amu (7.0 %) , and 87.9056 amu (82.6 %). Calculate the atomic mass of Sr. 113. Arsenic reacts with chlorine to form a chloride. If 1.587 g of arsenic reacts with 3.755 g of chlorine, what is the empirical formula of the chloride? 114. Vanillin, a flavoring agent, is made up of carbon, hydrogen, and oxygen atoms. When a sample of vanillin weighing 2.500g burns in pure oxygen, 5.79 g of carbon dioxide and 1.18 g of water are obtained. Calculate the empirical formula of vanillin? 115. What is the molecular formula of each of the following compounds? a. Empirical formula CH2 , molar mass =84g/mol b. Empirical formula NH2Cl, molar mass = 51.5 g/mol 7 AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School 116.. Determine the empirical and molecular formula of each of Ibufuren, a headache remedy contains 75.6 % C, 8.80 % H , and 15.5 % O by mass and a molar mass about 206 g/mol. 117. An open flask contains 0.200 mol of air. Atmospheric pressure is 745 mmHg and room temperature is 25˚C. How many moles are present in the flask when the pressure is 1.10 atm and the temperature is 33˚C? 118. On a warm day, an amusement park balloon is filled with 47.8 g He. The temperature is 33˚C and the pressure in the balloon is 2.25 atm. Calculate the volume of the balloon. 119. Calculate the density of carbon dioxide gas at 27˚C and 763 torr. 120. Calculate the molarity of a solution that contains 20.0grams of sodium hydroxide in 200. ml of solution. 8 AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School 1. Become familiar with the following Formulas and Names for the Common Acids and Compounds: Hydrochloric Acid – HCl Sulfuric Acid – H2SO4 Phosphoric Acid – H3PO4 Acetic Acid – HC2H3O2 Carbonic Acid – H2CO3 Nitric Acid – HNO3 AlK(SO4)2·12H2O alum CH4 methane C6H6 benzene C10H8 naphthalene (mothballs) CHCl3 chloroform CH3OH methyl alcohol or methanol (wood alcohol) m. C2H5OH ethyl alcohol or ethanol (drinking alcohol) n. CH3COCH3 acetone o. C3H5(OH)3 glycerin p. C6H8O6 L-ascorbic acid (vitamin C) q. CaCO3 chalk, marble, limestone r. CaO quicklime s. Ca(OH)2 slaked lime (lime water) t. CaSO4 gypsum, plaster of paris u. Fe3O4 or Fe2O3 rust v. HCHO formaldehyde w. H2O water x. Hg quicksilver y. K2CO3 potash z. MgO magnesia aa. MgSO4 epsom salts bb. NH3 ammonia cc. N2O laughing gas dd. Na2CO3 soda ash ee. NaCl table salt ff. NaHCO3 baking soda gg. NaNO3 saltpeter hh. NaOCl bleach ii. NaOH caustic soda or lye jj. SiO2 sand, quartz a. b. c. d. e. f. g. h. i. j. k. l. 9 AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School 10 AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School 11 AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School 12 AP Chemistry Summer Assignment 2014-2015 Ms. Steiner Woodland High School 13